Search and rescue method and system based on integral measurement of random encounter uncertainty

Abstract

The invention discloses a search and rescue method and system based on integral measurement uncertainty of random encounter, wherein the method includes the following steps: Step 1. Determine the path L lost by the lost person D, and determine that the lost person D finally appears on the path L Step 2, measure the path length l of the path L, and measure the position point of the searcher C on the path L; Step 3, calculate the probability density function of the searcher C and the lost person D distributed on the path L, and derive Get the encounter event Emeet; Step 4, calculate the encounter probability p(Emeet) according to the probability density function and the encounter event Emeet: Step 5, according to the encounter probability p(Emeet) Derive {the searcher C at the point xk can meet the lost person D event} probability p(Emeet|xk); Step 6, the searcher C moves to the vicinity of the point xm where the lost person D can be found with the greatest probability to carry out search and rescue.

Description

technical field [0001] The invention relates to the field of search and rescue, in particular to a search and rescue method and system based on integral measurement of random encounter uncertainty. Background technique [0002] In recent years, cases of personnel search and rescue have occurred from time to time. For example, the lost contact and search and rescue of people in outdoor activities, the lost and search of the elderly and children, etc. A typical case is this: It is known that the lost person last appeared in the middle of the path L and moved freely on the path L; how likely is it that a seeker encounters the lost person on the path L? At which point along the path L is the searcher most likely to encounter the lost person? [0003] 1. Mechanism of the working method before improvement [0004] The traditional rescue process is often based on human instinct or humanitarianism, and a large amount of search and rescue resources are invested in a certain area a...

AI Technical Summary

Problems solved by technology

[0016] The technical problem to be solved by the present invention is to solve the problem of the probability that the searcher C can meet the lost person D on the path L in the prior art. The discrete method cannot provide a stable or unique encounter probability defect. According to the non-uniform probability distribution of searchers and lost persons on the path L, the invention uses continuous integrals to calculate the unique encounter probability, and provides a search and rescue method and system based on integral measurement of uncertainty of random encounters

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